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| 01:07.32 | monkey_ | hey landley prpplague_afk |
| 01:08.24 | landley | hi monkey_. What's up? |
| 01:08.40 | monkey_ | notta |
| 01:08.41 | monkey_ | whats up with you |
| 01:08.47 | monkey_ | how familiar are you with openocd commands? |
| 01:09.08 | monkey_ | prpplague_afk guided me on installing openocd-redux, but then he dissapeared and was unable to help me finish and i'm finding the documnetation sucking |
| 01:09.52 | landley | monkey_: what little I know I learned from prpplague. :) |
| 01:10.06 | landley | You could try emailing him. |
| 01:10.22 | monkey_ | ok |
| 01:13.37 | monkey_ | how are you doign? |
| 01:19.01 | landley | Reasonably well. Job interview on tuesday, trying to get the next FWL release out by the end of the month, taking a friend to a movie tomorrow, various cat health issues. The usual. |
| 01:20.13 | monkey_ | good. congrats |
| 01:20.25 | monkey_ | you have a cat? |
| 01:21.39 | monkey_ | i have a dog |
| 01:22.12 | monkey_ | lets get them together to play |
| 01:26.36 | landley | 4 cats. |
| 01:26.55 | landley | Which is too many cats, but they're all sort of grandfathered (um, all female so grandmothered really) in. |
| 01:27.14 | monkey_ | you're the crazy cat lady of the embedded dev world |
| 01:31.47 | GammaX | lol |
| 01:32.15 | monkey_ | sup GammaX |
| 01:32.37 | GammaX | Hola. |
| 01:32.44 | monkey_ | are you familiar with openocd? |
| 01:32.51 | GammaX | nope. |
| 01:33.05 | GammaX | You familiar with write blocking? |
| 01:33.13 | monkey_ | nope. are you familiar with the matrix? |
| 01:35.41 | GammaX | Kiano Reeves matrix? |
| 01:35.48 | monkey_ | yes. |
| 01:35.57 | monkey_ | i want my arm7-tdmis to power a matrix for me |
| 01:37.16 | Madsy | Well? Perform a matrix-multiplication on N times :-) |
| 01:37.32 | Madsy | -on |
| 01:37.35 | monkey_ | maybe fourier transformation! |
| 01:39.11 | Madsy | { m = base; for(int i=0; i<expo; ++i){ MatMul(&m, &base); return m; } |
| 01:39.44 | monkey_ | fancy pants |
| 01:40.24 | Madsy | Remember, there is no spoon. Only fork(). |
| 01:54.42 | landley | Welcome to point and counterpoint! The Tick: Spoon! Neo: There is no spoon. This has been Point and Counterpoint! |
| 01:55.54 | monkey_ | lol |
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| 02:46.56 | monkey_ | liked roxfan better as roxfan2 |
| 02:47.24 | roxfan | :/ |
| 02:47.33 | monkey_ | harhar |
| 02:47.47 | monkey_ | who are the rox? |
| 02:47.58 | roxfan | roxette |
| 02:48.54 | monkey_ | who is roxette? |
| 02:49.14 | roxfan | a swedish band |
| 02:50.06 | monkey_ | are you swedish? |
| 02:50.13 | roxfan | no |
| 02:50.31 | monkey_ | i like petter |
| 02:52.11 | GammaX | any of you familiar with embedded linux? |
| 02:52.54 | monkey_ | are WE?!!? no |
| 02:56.50 | landley | GammaX: a little? |
| 02:57.06 | landley | What was your question? |
| 02:57.11 | landley | "Embedded Linux" is a really broad topic. |
| 02:58.46 | GammaX | how dependable is the linux read only feature? |
| 02:59.09 | landley | Which feature, the filesystem read only feature? Read only memory? |
| 02:59.25 | GammaX | file system |
| 02:59.37 | landley | The permission bits in the filesystem, or mounting the filesystem read only? |
| 03:00.21 | GammaX | uhhm Not sure. Im trying to have a system to forensicly aquire electronic media. |
| 03:00.40 | landley | "forensicly acquire" meaning...? |
| 03:00.55 | GammaX | the electronic media's hash cant change at all... |
| 03:01.29 | landley | What block device is it? |
| 03:01.33 | roxfan | landley: meaning if you change anything on it, the evidence goes poof |
| 03:01.41 | monkey_ | landley: he likes the matrix |
| 03:01.48 | GammaX | no data on the media can change at all. |
| 03:01.52 | landley | Ok, basically what you want to do is get a fresh hard drive, and copy the whole block device before mounting anything. |
| 03:01.57 | landley | cp /dev/hda /dev/hdb |
| 03:02.10 | landley | Then just mount the copy. |
| 03:02.18 | GammaX | basicly... and it cant ever write anything! |
| 03:02.44 | landley | Don't mount the original. Block copy the entire thing to a new disk. |
| 03:02.50 | landley | Then mount the new one -o ro |
| 03:03.07 | landley | The read only mounts are _mostly_ pretty good, except for corner cases like ext3 journal playback. |
| 03:03.21 | GammaX | landley, well it has to go into a certain format, thats where libewf comes into play |
| 03:04.22 | GammaX | I guess I need an embedded system that never mounts certain ports on the device. |
| 03:05.31 | landley | Ports? |
| 03:06.06 | GammaX | sata/pata/usb |
| 03:06.12 | GammaX | scsi |
| 03:06.50 | landley | Should be fairly straightforward. |
| 03:09.19 | MonMotha | GammaX: are you still looking to do the intercept thing and act as both a SATA host and SATA device? |
| 03:11.12 | GammaX | MonMotha, im trying to look at differant options... Im leaning more twoards a cots system and having embedded linux, it can have a gui for options and theres tons of support already. Althought if you found something for that then it would be much appreciated |
| 03:11.49 | landley | GammaX: I built a really stripped down system myself, http://impactlinux.com/fwl/downloads/binaries |
| 03:11.56 | landley | You probably want i686 or x86_64, use standard pc hardware. |
| 03:12.05 | MonMotha | GammaX: that would definitely be much simpler |
| 03:12.10 | landley | That boots to a shell prompt with a populated /dev that should detect your IDE or SCSI devices, but will only have mounted /dev/hda. |
| 03:12.25 | landley | In general any busybox-based system should work. |
| 03:12.57 | landley | You probably want busybox mdev populating /dev instead of udev, because mdev is really simple and just does a bunch of mknod by default. Udev does various probing to see what's what and find UUID labels and such. |
| 03:13.09 | landley | I don't _think _ it'll write to it, but it's inherently a lot more complicated than the busybox approach. |
| 03:13.17 | landley | None of the devices should be mounted until you do so. |
| 03:13.48 | landley | Another thing you can do is take off the write bit from the /dev entry. chmod -w /dev/hdb* |
| 03:14.05 | landley | (You can get an /etc/mdev.conf to do that for you.) |
| 03:14.17 | landley | That way, when you mount it the mount command should _force_ a read only mount. |
| 03:14.36 | GammaX | ok.. |
| 03:15.12 | landley | Really, what you want to do is copy the block device and never mount the real one. |
| 03:16.07 | landley | Possibly the best way is to get a little machine that boots from a kernel with initramfs from a USB stick and has a single hard drive adapter. |
| 03:16.25 | landley | Have it copy that hard drive through the network to a server. |
| 03:20.05 | GammaX | landley, that capability would be awsome aslong as it is a portable device. |
| 03:22.17 | GammaX | MonMotha, You think of anything for the physical write block? |
| 03:46.18 | landley | GammaX: you'd have to tweak the cable. For conventional PATA you could clip a wire. |
| 03:46.23 | landley | For SATA, not a chance. |
| 03:46.54 | landley | It's essentially gigabit ethernet transcievers connecting the controller to the disk. |
| 03:47.00 | landley | Except they use a shorter cable so they can clock the hell out of the PHY. |
| 03:47.19 | landley | SCSI I try to avoid. Overcomplicated. |
| 03:47.22 | GammaX | pata all you need to do is clip the wire? jeez , forensic companys charge an butt load for a write blocker |
| 03:47.56 | landley | I think so, it's been a while. |
| 03:48.16 | landley | Really you want to wait for morning and ask prpplague for hardware questions. |
| 03:48.26 | landley | Morning US Central time, I mean. He's near Dallas. |
| 03:56.00 | GammaX | ok |
| 03:56.11 | GammaX | how many hours away is that? lol |
| 03:56.41 | landley | It's currently coming up on 11pm in Central time. |
| 03:56.55 | GammaX | jeez. ok Thanks |
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| 05:00.44 | monkey_ | hey landley you there? |
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| 05:57.09 | landley | monkey_: intermittently. |
| 06:08.03 | MonMotha | landley: I'm not sure that you can just drop the WE line from the PATA cable without making it not work at all. IIRC, that line is also used for command writes of sorts, but I could be mistaken. |
| 06:08.14 | MonMotha | SATA resembles PCIe more than GbE, but same idea, yeah |
| 06:08.21 | MonMotha | LVDS as some terribly fast clock rate |
| 06:09.06 | MonMotha | The transceivers are the hard part. Filtering the command set is probably doable at full speed on even a cheap FPGA, but the cheapies don't have 1.5Gbps LVDS transceivers (let alone 3Gbps for SATA 2) |
| 06:09.09 | MonMotha | anyway, sleep |
| 06:09.41 | gammax | I gotta find someway to do this, its not allowing me to sleep lol |
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| 06:13.54 | monkey_ | landley: www.searchenginerapbattle.com |
| 06:35.49 | gammax | why is it so hard to physicly write block sata... I dont get it haha |
| 06:42.36 | landley | Most modern fast transcievers are derived from gigabit ethernet phys. |
| 06:43.03 | landley | Getting a gigabit per second to go over cheap cat 5 was a hard problem to crack circa 1999, and they did, and now you can do it with existing chips. |
| 06:43.17 | landley | And they went "you know, this is faster than USB", so they invented USB2 using phys. |
| 06:43.29 | landley | And it was faster than ATA, so they invented sata using phys. |
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| 06:43.44 | landley | Modified phys, but derived from 'em, I believe. |
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| 09:26.04 | gammax | is there a company that sells cots spartan 6 based boards? |
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| 10:49.02 | gammax | anyone know of an ic wich can filter commands? |
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| 14:37.20 | GammaX | Anyone have experience with ic filter? |
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| 18:24.59 | monkey_ | prpplague_afk: ?\ |
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| 19:25.16 | Lim_ | <PROTECTED> |
| 19:25.34 | Lim_ | can someone help? |
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